Apparatus for making asbestos yarn



Apr. "1 7, 12923.;

J. A. HEANY APPARATUS FOR MAKING ASBESTOS YARN Filed Dec. 17, 1921Patented Apr.. i7, I923 barren snares rarest oration.

JOHN AJ'LLEN HEANY, OF NEW HAVEN, CONNECTICUT, ASSIGNOR 1B0 RUGKIBESTDSIJRIQDUGTS CORPORATION, OF NEW YORK, N. Y., A CORPORATIQN' GE DEI'aA--WARE.

Application filed December 17, 1921.

T 0 all whom it may concern:

Be it known that I, JOHN ALLEN HEANY, a citizen of the United States,and a resident of New Haven, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements in Apparatus for Making Asbestos Yarn, of whlch the following is aspecification.

This invention relates to an apparatus for making asbestos yarn.

In the manufacture of wire-reinforced asbestos yarn by the rub motionprocess as described in my pendingapplication for patent Serial No.523,123, filed Dec. 17, 1921, it is the practice to feed the relnforc ngwires to the moving slivers from a position beneath the carrier beltsonwhich the slivers are received from the dofi'er rolls of the cardingmachine. This mode of operation has given good results and has gone intosuccessful use and practice.

In the course of further experimenting I have found that the reinforcingwires can be fed in from a more accessible location overhead if suitableprovision be made for preventing the entangling of the fibers about aguide roller around which the overhead wires must of necessity beguided. It is an object of this invention to provide for a leading in ofthe reinforcing wires from overhead and to avpid the objectionable.

entangling of the fibers with the guide roll.

The invention includes the use of a guide roller for the overhead wiresor threads by means of which the reinforcing filaments can be directedinto operating position between the rub motion belts, and a receiver forthe slivers as they are stripped from the dofiier rolls. The receivertakes the form of a conveyor belt having a sloping carrier surfacearranged to bring the slivers in contact with the wires at points beyondthe position of the guiding roller, the slope of the belt beingsufficient to prevent contact of the asbestos with the roller as it iscarried by the position of the roller.-

In the drawing in which a preferred form of the invention isillustrated, the single figure illustrates the invention in diagrammaticform.

Referring to the drawing .a dofier roll' 5 APPARATUS IOl't MAKINGASBESTOS YARN.

Serial No. 523,12d.

of a carding machine is shown from which a dofi'er comb 6 strips sliversof carded asbestos fibers and deposits the slivers on the slopingconveyor belt or apron 6.

At 7 is shown a reel or spool of wire or thread from which the wire orthread 8 that is to form a reinforcement for the yarn is led around theguiding roller 9. The lower or delivery surface of the guiding roller 9is in alinement with the confronting surfaces of the two sets of rubmotion belts 10 and 11 so that the filaments which are to formreinforcing cores for the yarn are led directly between the rub surfacesof the rub motion belts without vertical deflection.

In order to supply the carded slivers of fibers to the filaments and therub motion belts, the conveyor or carrier belt or apron 16 is providedwhich receives the sliver 13 as it is removed from the surface of theroll 5. The mass of carded fibers is carried in an. upwardly slantingdirection to a point between the position of the guide roller 9 and theentrance end of the first set 10 of rub motion belts. if

By this arrangement I succeed in avoiding the bringing of the cardedfibers into engagement with guiding roller 9 and the consequententangling of the fibers about the roller. I am thus enabled to lead thereinforcingfilaments 8 into the apparatus from overhead thereby givingready access to the spools 7 and the filaments as distinguished from thealternative practice of leading the filaments into the apparatus frombeneath.

Preferably the carrier belt 16 is provided with transverse bars orstrips of metal 15 to provide resistence to the wear of the filaments 8at their points of engagement with the upper end of the belt.

It will be seen that by bringing the filement and sliver into engagementjust before their entrance into the rub motion belts 10 the filament isefiectively covered by the fibers to form an asbestosyarn having areinforcing filamentary core. When the yarn issues from the second setof rub belts 11 it is wound into a roll as at 26on the surface windingroller 17. The reinforcement of the wire may be in the form of thread orwire as has been stated, depending v on the use to which the product isto be put.

What is claimed is:

1. In an apparatus for making reinforced yarn, a rub motion device forapplying fibrous material to a reinforcing filament, a guide roller fordirecting the filament between the rubbing surfaces of the rub motiondevice, and means forreceiv ing the fibrous material and bringing itinto engagement with the reinforcing filament between the guide rollerand the inlet portion of the rub motion device.

2. In an apparatus for making reinforced yarn, a rub motion device forapplying fibrous material to a reinforcing filament, a guide roller inalinement with the rubbing surfaces of the rub motion device fordirecting the reinforcing filament into the rub motion device, and acarrier belt for receiving the fibrous material and bringing it into enagement with the reinforcing filament between the guide roller and theinlet portion of the rub motion device.

3. In an apparatus for making reinforced yarn, a rub motion device forapplying fibrous material to a reinforcing filament, a guide roller inalinement with the rubbing surfaces of the rub motion device fordirecting a reinforcing filament from overhead into the rub motiondevice, and a carrier belt mounted at an inclination to receive fibrousmaterial and convey it into engagement with the reinforcing filamentbetween the guide roller and the inlet portion of the rub 1 motiondevice without engagement with the guide roller.

4. In an apparatus for making asbestos yarn, a doffer roll for supplyingslivers of carded asbestos, a rub motion device for applying fibrousmaterial to a reinforcing filament, a guide roller for directing thefilament from overhead between the rubbing surfaces of the rub motiondevice, and a carrier belt for receiving the slivers of carded asbestosfrom the doifer roll and; bringing them into engagement with thereinforcing filaments between the guide roller and the inlet portion ofthe rub motion device.

5; In combination with the doifer roll of a carding machine, a dofierdevice for removing slivers of carded asbestos from the dofi'er roll, acarrier belt having an upwardly sloping position with its lower end inposition to receive the slivers, a rub motion device in position toreceive the slivers from the upper end of the carrier belt, and a guideroller for a reinforcing filament for directing the filaments fromoverhead into the rub motion device without substantial verticaldeflection, said guiding roller being located to the rear of the upperend of the carrier belt so as to remain out of en agement with theasbestos thereon but to ring the filaments into contact with theasbestos on upper end of the belt.

s JOHN ALLEN HEANY.

